chore: 2026 Q3 wardening

.github/workflows/ci.yml

@@ -29,10 +29,10 @@ jobs:
       - name: Set up Elixir
         uses: erlef/setup-beam@v1
         with:
-          elixir-version: "1.18.1"
-          otp-version: "27.2"
+          elixir-version: "1.20"
+          otp-version: "29"
       - name: Restore dependencies cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: deps
           key: ${{ runner.os }}-mix-${{ hashFiles('**/mix.lock') }}
@@ -43,18 +43,55 @@ jobs:
         run: mix format --check-formatted
       - name: Run Credo
         run: mix credo
+  dialyzer:
+    name: Dialyzer
+    runs-on: ubuntu-latest
+    env:
+      ELIXIR_VERSION: "1.20"
+      OTP_VERSION: "29"
+    steps:
+      - uses: actions/checkout@v5
+      - name: Set up Elixir
+        uses: erlef/setup-beam@v1
+        with:
+          elixir-version: ${{ env.ELIXIR_VERSION }}
+          otp-version: ${{ env.OTP_VERSION }}
+      - name: Restore dependencies cache
+        uses: actions/cache@v4
+        with:
+          path: deps
+          key: ${{ runner.os }}-mix-${{ hashFiles('**/mix.lock') }}
+          restore-keys: ${{ runner.os }}-mix-
+      - name: Restore PLT cache
+        uses: actions/cache@v4
+        with:
+          path: priv/plts
+          key: ${{ runner.os }}-plt-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ hashFiles('**/mix.lock') }}
+          restore-keys: ${{ runner.os }}-plt-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-
+      - name: Install dependencies
+        run: mix deps.get
+      - name: Run Dialyzer
+        run: mix dialyzer --format github
   test:
-    name: Test
+    name: Test (Elixir ${{ matrix.elixir }} / OTP ${{ matrix.otp }})
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - elixir: "1.16"
+            otp: "26"
+          - elixir: "1.20"
+            otp: "29"
     steps:
       - uses: actions/checkout@v5
       - name: Set up Elixir
         uses: erlef/setup-beam@v1
         with:
-          elixir-version: "1.18.1"
-          otp-version: "27.2"
+          elixir-version: ${{ matrix.elixir }}
+          otp-version: ${{ matrix.otp }}
       - name: Restore dependencies cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: deps
           key: ${{ runner.os }}-mix-${{ hashFiles('**/mix.lock') }}

.tool-versions

@@ -1,2 +1,2 @@
-elixir 1.18.3-otp-27
-erlang 27.3.1
+elixir 1.20.4-otp-29
+erlang 29.0.6

CHANGELOG.md

@@ -11,6 +11,16 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Use Mint for all HTTP/1 and HTTP/2 connections. This replaces the use of `:httpoison`
   and `:kadabra`. ([#296](https://github.com/codedge-llc/pigeon/pull/296))
+- Minimum supported Elixir version is now `1.16`. Pigeon supports every Elixir version
+  that still receives security patches, and the minimum moves forward as Elixir drops
+  older branches. ([#310](https://github.com/codedge-llc/pigeon/pull/310))
+- Support Elixir 1.20 and Erlang/OTP 29. ([#310](https://github.com/codedge-llc/pigeon/pull/310))
+- Prune stale `:httpoison` and `:kadabra` entries from `mix.lock`. ([#305](https://github.com/codedge-llc/pigeon/pull/305))
+
+**Removed**
+
+- Unpublished v1 guides in `docs/`. The `Pigeon.ADM`, `Pigeon.APNS`, and `Pigeon.FCM`
+  module docs cover v2 setup. The v1 guides remain on the `v1.6` branch. ([#310](https://github.com/codedge-llc/pigeon/pull/310))
 
 **Fixed**
 

LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2015-2025 Codedge LLC (https://www.codedge.io/)
+Copyright (c) 2015-2026 Codedge LLC (https://www.codedge.io/)
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -1,17 +1,17 @@
-![logo](https://raw.githubusercontent.com/codedge-llc/pigeon/master/docs/logo.png)
+![logo](https://raw.githubusercontent.com/codedge-llc/pigeon/main/docs/logo.png)
 
 > iOS (APNS), Android (FCM), and Amazon Android (ADM) push notifications for Elixir.
 
 [![CI](https://github.com/codedge-llc/pigeon/actions/workflows/ci.yml/badge.svg)](https://github.com/codedge-llc/pigeon/actions/workflows/ci.yml)
 [![Version](https://img.shields.io/hexpm/v/pigeon.svg)](https://hex.pm/packages/pigeon)
 [![Total Downloads](https://img.shields.io/hexpm/dt/pigeon.svg)](https://hex.pm/packages/pigeon)
-[![License](https://img.shields.io/hexpm/l/pigeon.svg)](https://github.com/codedge-llc/pigeon/blob/master/LICENSE)
-[![Last Updated](https://img.shields.io/github/last-commit/codedge-llc/pigeon.svg)](https://github.com/codedge-llc/pigeon/commits/master)
+[![License](https://img.shields.io/hexpm/l/pigeon.svg)](https://github.com/codedge-llc/pigeon/blob/main/LICENSE)
+[![Last Updated](https://img.shields.io/github/last-commit/codedge-llc/pigeon.svg)](https://github.com/codedge-llc/pigeon/commits/main)
 [![Documentation](https://img.shields.io/badge/documentation-gray)](https://hexdocs.pm/pigeon/)
 
 ## Installation
 
-Add `:pigeon` and as a `mix.exs` dependency:
+Add `:pigeon` as a `mix.exs` dependency:
 
 ```elixir
 def deps do
@@ -21,6 +21,9 @@ def deps do
 end
 ```
 
+Pigeon supports every Elixir version that still receives security patches, currently 1.16 and later.
+The minimum version moves forward when Elixir drops a branch from support.
+
 ## Upgrading from v1.6
 
 See the [migration guide](./docs/Migrating-to-v2-0-0.md) for instructions.
@@ -51,7 +54,7 @@ See [Pigeon.Adapter](https://hexdocs.pm/pigeon/Pigeon.Adapter.html) for instruct
 ### Testing
 
 Unit tests can be run with `mix test` or `mix coveralls.html`. Environment variables will need to be set for
-various credentials. See [config/test.exs](https://github.com/codedge-llc/pigeon/blob/master/config/test.exs)
+various credentials. See [config/test.exs](https://github.com/codedge-llc/pigeon/blob/main/config/test.exs)
 for the full list.
 
 ### Formatting
@@ -66,6 +69,6 @@ Git commit subjects use the [Karma style](http://karma-runner.github.io/5.0/dev/
 
 ## License
 
-Copyright (c) 2015-2025 Codedge LLC (https://www.codedge.io/)
+Copyright (c) 2015-2026 Codedge LLC (https://www.codedge.io/)
 
-This library is MIT licensed. See the [LICENSE](https://github.com/codedge-llc/pigeon/blob/master/LICENSE) for details.
+This library is MIT licensed. See the [LICENSE](https://github.com/codedge-llc/pigeon/blob/main/LICENSE) for details.

config/dev.exs

@@ -14,5 +14,5 @@ config :pigeon, PigeonTest.APNS,
 
 config :pigeon, PigeonTest.FCM,
   adapter: Pigeon.FCM,
-  project_id: System.get_env("FCM_PROJECT"),
-  service_account_json: System.get_env("FCM_SERVICE_ACCOUNT_JSON")
+  auth: PigeonTest.Goth,
+  project_id: System.get_env("FCM_PROJECT")